CVE-2026-118766 (GCVE-0-2026-118766)
Vulnerability from cvelistv5 – Published: 2026-10-29 17:14 – Updated: 2026-11-04 01:32
VLAI
EPSS
VEX
Title
Botan: Online OCSP redirects enable blind requests to internal HTTP services
Summary
Botan is a C++ cryptography library. Prior to 3.13.0, Botan's online OCSP client allowed a single HTTP redirect while posting an OCSP request to the URI in a certificate's Authority Information Access extension. A malicious OCSP responder or an on-path attacker could redirect the client to make one blind request to an otherwise unreachable internal HTTP service. The primary impact is blind SSRF that might affect internal services with non-idempotent GET handlers, and response timing can provide a coarse internal-service oracle. This issue is fixed in version 3.13.0.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-04 01:32 UTC
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
GitHub_M
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/randombit/botan/security/advis… | x_refsource_CONFIRM |
| https://github.com/randombit/botan/pull/5815 | x_refsource_MISC |
| https://github.com/randombit/botan/commit/9791ca3… | x_refsource_MISC |
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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